Air-brush.



Patantad June 4, mm. C. PHILLIPS.

AIR BRUSH.

(Appliention filed Oct. 10, 1900.

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VII/III 8 Witnesses.

Attorney.

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UNITED STATES PATENT OFFICE.

COLUMBUS PHILLIPS, OF MERIDIAN, MISSISSIPPI, ASSIGNOR OF ONE-HALF TOJAMES E. MINOR, OF NEW HAVEN, CONNECTICUT.

AIR-BRUSH.

SPECIFICATION forming part of Letters Patent No. 675,840, dated June 4,1901. Application filed October 10, 1900. Serial No. 32,568. (No model)To all 1072 0112, it may concern.-

Be it known that I, COLUMBUS PHILLIPS, a citizen of the United States,residing at Meridian, in the county of Lauderdale and State ofMississippi, have invented certain new and useful Improvements inPaint-Spraying Nozzles, of which the following is a specification,reference being had therein to the accompanying drawing.

IO My invention relates to improvements in paint-spraying nozzles, whichare commonly known as automatic painting-machines.

It is the object of my invention, among other things, to provide asimple and inexpensive device for distributing paint upon extendedsurfaces-such as walls of buildings, cars, &c.that will greatly reducethe time necessary to perform the work and will also distribute thepaint with a uniform thickness over the whole surface, and, further, toprovide means connected with such a device whereby the quantity of paintwhich passes through the nozzle can be varied.

To these and other ends myinvention consists in a paint-spraying nozzlehaving certain details of construction and combination of parts, as willbe hereinafter described, and more particularly pointed out in theclaims.

Referring to the drawing, which shows a longitudinal sectional elevationof my improved nozzle, the numeral 1 designates the body member, whichis cylindrical in form and has a bore 2 throughout its whole length; 3,a socket preferably integral with the body member, within which isinserted a handle 4,

which is used to elevate the device; 5, an airinlet pipe, which isthreaded within the body member; 6, a pipe threaded to a cap 7, screwedinto a boss 8 upon the body member, the said cap 7 having a recess inits upper end whereby a paint-chamber 0 is formed between the said capand the body member. Movably mounted within the bore 2 is adischargenozzle 10, having threaded into its rear end 5 an air-nozzle11, with a head portion 12 of substantially the same diameter as thebore 2. Through the shell of the discharge-nozzle 10 are a plurality ofport-holes 13,0f substantially the same size and shape as the port-holes14 through the shell of the body member 1, which port-holes when theyregister with each other connect the chamber 9 with the interior of thedischarge-nozzle 10. A longitudinal movement of the discharge-nozzlewithin the body member is obtained by means of the connection-block 15,which is pivotally secured to the rear end of the nozzle by the pintle16, and a stem 17, having a head portion 18, the said stem being securedto the connectionblock 15 by means of the nut 19, which is threaded intothe said connection block. Closing the rear end of the bore 2 in thebody member 1 is a cap 20, through which the stem 17 is threaded, agland 21, containing suitable packing, as 23, threaded upon the boss 22,preventing the escape of air or paint through the rear end of the bodymember. The stem 17 is rotated by means of a button 24, which isthreaded upon said stem and locked thereon by the jam-nut 25.

The movement of the discharge-nozzle 10 is limited in either directionby a stop 26, which is threaded through the said body member andprojects into a groove 27 in the exterior of the nozzle 10. The pipes 5and 6 are connected, preferably, with flexible hose 28 by any preferredmeans common to the art, which connect said device with aconveniently-located source of air and paint supply.

In operating the device the air-supply enters the bore 2 of the bodymember 1 through the air-pipe 5, filling the chamber therein andescaping through the air-nozzle 11, where it creates a partial vacu umin the interior of the nozzle 10, which causes the paint to be drawnthrough the pipe 0 into the paint-chamber 9 and through the ports 14 and13 into the interior of the nozzle 10, where it joins with the air andthen passes through the mouth of the discharge-nozzle and is thrown inthe form of a spray upon the surface against which it is directed. Tovary the quantity of paint, the position of the discharge-nozzle 101sadjusted so as to cover or uncover a greater or less area of the ports11, which adjustment is obtained by rotating the stem 17 through thebutton 21. It is apparent that the fullest and largest quantity of paintpossible is obtained when the ports 13 are in register with the ports14, as shown, and by shifting the discharge-noz- I00 zle 1O endwisewithin the body member 1 a portion of the ports 14: are covered, whichthereby reduces the area thereof and as a consequence decreases theamount of paint that can be passed therethrough.

This device can be used for an air-duster by simply disconnecting thepaint connections.

There are minor changes and alterations that can be made within myinvention, and I would therefore have it understood that I do not limitmyself to the exact construction herein shown and described, but claimall that falls fairly within the spirit and scope of my invention.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. In a device of the character described, the combination with the bodymember having separate inlet-openings for the admission of air andpaint, respectively; of an adjustable discharge-nozzle within said bodymember having valve-ports therethrough of similar form to thepaint-inlet openings and adapted to register therewith, to regulate theflow of paint; of an air-nozzle within said discharge-nozzle and movabletherewith; and threaded means rotatably secured to said nozzles formoving the same within the said body member.

2. In a device of the character described, the combination with the bodymember I having an opening therethrough for the admission of air andinlet-openings 14 for the admission of paint; of a discharge-nozzle 10within said body member having valve-ports 13 th'erethrough similar inform to the said inletopenings ll and adapted to register therewith byan adjustment of the dischargenozzle 10; nozzle 11 fixed to saiddischargenozzle; stem 17 rotatably connected with said nozzle; and a cap20 secured to and closing the open end of said body member and throughwhich the said stem is threaded.

3. In a device of the character described, the combination with the bodymember I having the inlet-openings 1i therethrough; of thedischarge-nozzle 10 having valve-ports 13 therethrough of similar formto said inletopenings; air nozzle 11 fixed to said discharge-nozzle;stem 17 rotatably connected with said nozzles; cap 20 closing one end ofsaid body member; and a cap 7 secured to said body member and coveringthe said inletopenings H so as to leave a chamber between the said capand the said body member, substantially as described.

In testimony whereof I aftix my signature in presence of two witnesses.

COLUMBUS PHILLIPS.

Witnesses:

L. 1;. FERGUSON, Rrcno. G. P. Mv'r'rox.

